Just a not-so-quick update.

The stats are obtained as follows:

• All the historical BTC/USD data available at bitcoincharts,com is used.
• So a total of 175,864,433 entries since Sunday, 25 April 2010 16:37:04 till today are used.
• The exchanges included are: 1coin, abucoins, allcoin, anxhk, b2c, b7, bcLR, bcmBM, bcmLR, bcmMB, bcmPP, bitalo, bitbay, bitbox, bitcurex, bitfinex, bitfloor, bitflyer, bitkonan, bitmarket, bitme, bitstamp, btc24, btcalpha, btcc, btce, btcex, btctree, cbx, cex, coinbase, coinsbank, cotr, cryptox, crytr, exchb, exmo, fbtc, getbtc, global, hitbtc, ibwt, icbit, imcex, indacoin, intrsng, itbit, just, kraken, lake, localbtc, lybit, mtgox, okcoin, ripple, rock, ruxum, thLR, th, vcx, weex, wex

Date   9/6/18
VWAP   $6422.69
x   2973
y   8.767592
a (slope) historical   +0.00327084849169102
b (intercept) historical   -0.069262946826707
Rsq historical   0.864354018483482
BETI historical   -0.887377824698852
Expected Price historical   $15,599.11
Actual price / expected price historical   41.1733977153379%

-2.00   $2,111.11
-1.50   $3,480.63
-1.00   $5,738.59
-0.50   $9,461.34
-0.25  $12,148.60
+0.00  $15,599.11
+0.25  $20,029.66
+0.50  $25,718.60
+1.00  $42402.80

You know... It cannot be more comprehensive than this... and the result is very similar to the one using just Mt Gox and Bitstamp.